Stem for laser cooling device



FIG. 1 is a side elevational view of a stem for a laser cooling device embodying my new design;

FIG. 2 is an end elevational view of the FIG. 1 article;

FIG. 3 is an end elevational view of the FIG. 1 article;

FIG. 4 is a plan view of the FIG. 1 article; and,

FIG. 5 is a plan view of the FIG. 1 article. 

The ornamental design for a stem for laser cooling device, as shown and described. 